CN113069229A - 3D prints root bone implant with multistage structure - Google Patents
3D prints root bone implant with multistage structure Download PDFInfo
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- CN113069229A CN113069229A CN202110189100.3A CN202110189100A CN113069229A CN 113069229 A CN113069229 A CN 113069229A CN 202110189100 A CN202110189100 A CN 202110189100A CN 113069229 A CN113069229 A CN 113069229A
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
- A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
- A61C8/0025—Self-screwing with multiple threads
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
- A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Dental Prosthetics (AREA)
Abstract
The invention discloses a 3D printing root bone implant with a multi-section structure, which comprises a dental crown and an implant arranged at the bottom of the dental crown, wherein a fixing groove is formed in the top of the implant, an abutment is movably connected inside the fixing groove, the top of the abutment sequentially penetrates through the fixing groove and the dental crown and extends to the inside of the dental crown, and a biological silica gel sheet is fixedly connected to the surface of the abutment and the top of the implant. This 3D prints root bone implant with multistage structure, can effectively improve the cutting of implant and grab bone ability through setting up of multistage screw thread, realize the fixed stability of implant, at the implant root, nano-hydroxyapatite coating can be released through the micropore, be favorable to the osseous tissue on implant surface to grow into, can promote osseointegration, TiN nano-coating has apparent antibacterial property simultaneously, effectively print the production of bacterium, the connective tissue binding capacity around the inside implant of oral cavity has also been improved.
Description
Technical Field
The invention relates to the technical field of implants, in particular to a 3D printing root bone implant with a multi-section structure.
Background
The oral implant is also called as a dental implant and is also called as an artificial tooth root, and is implanted into the upper and lower jaws of the edentulous part of a human body in a surgical way, after the surgical wound of the oral implant is healed, a device for repairing the false tooth is arranged on the upper part of the oral implant, the oral implant consists of (1) a body part, namely a part for implanting the false tooth into the human body tissue, (2) a neck part and (3) a foundation pile or an abutment part, wherein the body part is a part for implanting the implant into the human body tissue and is divided into A, implanting a mucoid or B, implanting into soft tissue according to the implantation part, 2, the neck part is a part for connecting the body part with the foundation pile or the abutment, 3, the foundation pile or the abutment is a part for exposing the dental implant out of the mucoid and providing supporting, fixing and stabilizing functions for the artificial false tooth of the upper structure, and the oral implant is divided into 1, metal and alloy materials: including gold, 316L stainless steel (iron-chromium-nickel alloy), cast cobalt-chromium-molybdenum alloy, titanium and alloys, etc., 2. ceramic materials: including bio-inert ceramics, bio-active ceramics, biodegradable ceramics, etc., 3. carbon materials: including glassy carbon, low temperature isotropic carbon, etc., 4. polymer materials: including acrylates and polytetrafluoroethylenes, and the like, 5. composite materials, i.e., composites of two or more materials, such as metal surface sprayed with ceramic, and the like.
The problem that a patient lacks teeth can be solved by implanting the dental implant, the titanium alloy implant is widely applied to the field of oral implantation because the titanium alloy has good biocompatibility, the stability of the implant is reduced and the implant is easy to loosen due to poor cutting and bone grabbing performance of the conventional implant after fixation, and meanwhile, the implant is weak in binding capacity with connective tissues around the inside of the oral cavity, so that adhesion of bacteria is easy to cause and subsequent recovery of the patient is not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a 3D printing root bone implant with a multi-section structure, which solves the problems that after the existing implant is fixed, the stability of the implant is reduced and the implant is easy to loosen due to poor cutting and bone grabbing performance of the existing implant, and meanwhile, the implant is poor in binding capacity with connective tissues around the inside of an oral cavity, so that the adhesion of bacteria is easy to cause and the subsequent recovery of a patient is not facilitated.
In order to achieve the purpose, the invention is realized by the following technical scheme: A3D printing root bone implant with a multi-section structure comprises a dental crown and an implant body arranged at the bottom of the dental crown, wherein a fixing groove is formed in the top of the implant body, a base station is movably connected inside the fixing groove, the top of the base station sequentially penetrates through the fixing groove and the dental crown and extends to the inside of the dental crown, a biological silica gel sheet is fixedly connected to the surface of the base station and positioned at the top of the implant body, a cushion pad is fixedly connected to the bottom of the inner wall of the fixing groove, a fastening screw is connected to the bottom of the inner wall of the base station in a threaded manner, the bottom of the fastening screw sequentially penetrates through the cushion pad, the fixing groove and the implant body and extends to the inside of the implant body, a threaded hole matched with the fastening screw is formed in the inside of the implant body and positioned at the bottom of the fixing groove, a first threaded, the bottom of the surface of the implant is fixedly connected with a third thread section, the bottom inside the implant is provided with a movable groove, the inner wall of the movable groove is bonded with a nano hydroxyapatite coating through an adhesive, and the bottom of the surface of the implant is provided with micropores.
Preferably, the surfaces of the first thread section, the second thread section and the third thread section are coated with TiN nano coatings, and the thread pitch between two adjacent thread gaps of the first thread section is 0.7 mm.
Preferably, the thread pitch between two adjacent thread gaps of the second thread section is 0.5mm, and the thread pitch between two adjacent thread gaps of the third thread section is 0.3 mm.
Preferably, the interior of the dental crown is provided with a groove, the top of the abutment is embedded in the groove, and the top of the abutment and the groove of the dental crown are in interference fit.
Preferably, the top of the cushion pad is in contact with the bottom of the abutment.
Preferably, the depth of the micropores is 400-600 microns, and the pore diameter of the micropores is 30-50 microns.
Preferably, the micropores are used for releasing the nano hydroxyapatite coating.
Preferably, the buffer pad is of a ring-shaped structure, and is made of a PEEK resin material, so as to avoid direct collision between the abutment and the implant.
The invention also discloses a method for preparing the root bone implant, which comprises the following steps:
s1, model design of the implant: obtaining a tooth model of a patient, drawing a corresponding dental crown and an implant by using three-dimensional design software, outputting a designed structure model into an STL data format, importing the STL data format into commercial pretreatment software, and setting the thickness of a slice layer to be 0.03-0.06 mm to form a slice file;
s2, importing the slice file obtained in step 1 into a laser 3D printer, and setting specific laser processing parameters: laser power: 280 KW-360 KW, scanning speed: 800-1250 mm/s, lap joint rate: 35% -60%, keeping the thickness of the powder layer consistent with that of the slice layer, and performing 3D printing to obtain the 3D printed rootbone implant.
The invention provides a 3D printed spinal implant having a multi-segmented structure. The method has the following beneficial effects:
(1) the 3D printing root bone implant with the multi-section structure comprises a dental crown and an implant body arranged at the bottom of the dental crown, wherein a fixed groove is formed in the top of the implant body, a base station is movably connected inside the fixed groove, the top of the base station sequentially penetrates through the fixed groove and the dental crown and extends to the inside of the dental crown, a biological silica gel sheet is fixedly connected to the surface of the base station and positioned at the top of the implant body, a cushion pad is fixedly connected to the bottom of the inner wall of the fixed groove, a fastening screw is connected to the bottom of the inner wall of the base station in a threaded manner, the bottom of the fastening screw sequentially penetrates through the cushion pad, the fixed groove and the implant body and extends to the inside of the implant body, a threaded hole matched with the fastening screw is formed in the inside of the implant body and positioned at the bottom of the fixed groove, a first threaded section, the movable groove has been seted up to the inside bottom of implant, and the inner wall of movable groove has nanometer hydroxyapatite coating through the adhesive bonding, the micropore has been seted up to the bottom on implant surface, first screw thread section, the surface of second screw thread section and third screw thread section all coats and has TiN nanometer coating, can effectively improve the cutting of implant and grab bone ability through setting up of multistage screw thread, realize the fixed stability of implant, at the implant root, nanometer hydroxyapatite coating can be released through the micropore, be favorable to the osseous tissue on implant surface to grow into, can promote osseointegration, the TiN nanometer coating has apparent antibacterial property simultaneously, effectively print the production of bacterium, the connective tissue bonding ability around the inside implant in oral cavity has also been improved.
(2) This 3D prints root bone implant with multistage structure, bottom fixedly connected with blotter through fixed slot inner wall, the blotter is the annular column structure, and the blotter adopts PEEK resin material to make for avoid the direct collision between base station and the planting body, can realize having increased the shock-absorbing capacity between base station and the planting body, improve the travelling comfort of patient when the interlock, bring natural chewing sense.
(3) This 3D prints root bone implant with multistage structure, bottom threaded connection through the abutment inner wall has fastening screw, fastening screw's bottom runs through blotter, fixed slot and planting body in proper order and extends to the inside of planting body, the inside of planting body just is located the bottom of fixed slot and sets up the screw hole with fastening screw looks adaptation, can realize fastening fixedly between abutment and the planting body, has laid a good foundation for the fixed of follow-up dental crown.
Drawings
FIG. 1 is a cross-sectional view of a structure of the present invention;
FIG. 2 is a schematic structural view of the implant of the present invention;
fig. 3 is a sectional view of the root of the implant of the present invention;
FIG. 4 is a cross-sectional view of the abutment structure of the present invention;
FIG. 5 is a flow chart of the present invention.
In the figure: 1-dental crown, 2-implant, 3-fixed groove, 4-abutment, 5-biological silica gel sheet, 6-buffer pad, 7-fastening screw, 8-first thread section, 9-threaded hole, 10-second thread section, 11-third thread section, 12-movable groove, 13-nano hydroxyapatite coating and 14-micropore.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: A3D prints the implant of root bone with multi-sectional structure, can improve cutting and catching the bone ability of the implant 2 effectively through the setting of the multi-sectional screw thread, realize the fixed stability of the implant 2, at the root of the implant 2, can release the nano-hydroxyapatite coating 13 through the micropore 14, help the bone tissue on the surface of the implant 2 to grow into, can promote osseointegration, TiN nano-coating has apparent antibacterial property at the same time, the production of the effective printed bacterium, the connective tissue binding capacity around the implant 2 of the internal oral cavity has also been improved, including the dental crown 1 and implant 2 set up in the bottom of the dental crown 1, the top of the implant 2 has set up the fixed slot 3, and the inside swing joint of the fixed slot 3 has the base station 4, the top of the base station 4 runs through 3 and dental crown 1 in proper order and extends to the inside of the dental crown 1, the surface of the base station 4 and lie in the top fixedly connected with biological, the bottom of the inner wall of the fixed groove 3 is fixedly connected with a cushion pad 6, the bottom of the inner wall of the base station 4 is in threaded connection with a fastening screw 7, the base station 4 and the implant 2 can be fastened and fixed, a foundation is laid for fixing the subsequent dental crown 1, the bottom end of the fastening screw 7 sequentially penetrates through the cushion pad 6, the fixed groove 3 and the implant 2 and extends into the implant 2, the buffer performance between the base station 4 and the implant 2 can be improved, the comfort of a patient in occlusion is improved, and the natural chewing feeling is brought, a threaded hole 9 matched with the fastening screw 7 is formed in the bottom of the fixed groove 3 in the implant 2, a first threaded section 8 is fixedly connected to the upper part of the surface of the implant 2, a second threaded section 10 is fixedly connected to the middle part of the surface of the implant 2, a third threaded section 11 is fixedly connected to the bottom of the surface of the implant 2, and a movable, and the inner wall of the movable groove 12 is adhered with a nano hydroxyapatite coating 13 through an adhesive, and the bottom of the surface of the implant 2 is provided with micropores 14.
In the embodiment of the invention, the surfaces of the first thread section 8, the second thread section 10 and the third thread section 11 are coated with TiN nano coatings, the thread pitch between two adjacent thread gaps of the first thread section 8 is 0.7mm, titanium nitride is a compound, the molecular formula is TiN, the molecular weight is 61.88, TiN powder is generally tawny, superfine TiN powder is black, TiN crystals are golden yellow, the TiN melting point is 2950 ℃, the Mohs hardness is 8-9, the thermal shock resistance is good, the TiN melting point is higher than that of most transition metal nitrides, and the density is lower than that of most metal nitrides.
In the embodiment of the invention, the thread pitch between two adjacent thread gaps of the second thread section 10 is 0.5mm, and the thread pitch between two adjacent thread gaps of the third thread section 11 is 0.3 mm.
In the embodiment of the invention, the inner part of the dental crown 1 is provided with the groove, the top of the abutment 4 is embedded in the groove, and the top of the abutment 4 is in interference fit with the groove of the dental crown 1.
In the present embodiment, the top of the cushion pad 6 is in contact with the bottom of the base 4.
In the embodiment of the present invention, the depth of the micro-hole 14 is 400-600 microns, and the diameter of the micro-hole 14 is 30-50 microns.
In the embodiment of the present invention, the micropores 14 are used to release the nano hydroxyapatite coating 13.
In the embodiment of the present invention, the cushion pad 6 has a ring-shaped structure, and the cushion pad 6 is made of PEEK resin material, so as to avoid direct collision between the abutment 4 and the implant 2.
The invention also discloses a method for preparing the root bone implant, which comprises the following steps:
s1, model design of the implant: obtaining a tooth model of a patient, drawing a corresponding dental crown (1) and an implant (2) by using three-dimensional design software, outputting a designed structural model into an STL data format, importing the STL data format into commercial preprocessing software, and setting the thickness of a slice layer to be 0.03-0.06 mm to form a slice file;
s2, importing the slice file obtained in step 1 into a laser 3D printer, and setting specific laser processing parameters: laser power: 280 KW-360 KW, scanning speed: 800-1250 mm/s, lap joint rate: 35% -60%, keeping the thickness of the powder layer consistent with that of the slice layer, and performing 3D printing to obtain the 3D printed rootbone implant.
When the self-locking implant is used, firstly, a gum is cut at a position where a patient needs to implant to drill a hole, the diameter of the hole is slightly smaller than that of the implant 2, then the implant 2 is rotatably inserted into the hole, the bone grabbing performance of the implant 2 is improved through the arrangement of the first thread section 8, the second thread section 10 and the third thread section 11, the self-locking effect is achieved, the fixing stability of the implant 2 is improved, then the bottom of the base table 4 is inserted into the fixing groove 3, the bottom of the base table 4 is contacted with the top of the cushion pad 6, then the fastening screw 7 sequentially penetrates through the base table 4 and the cushion pad 6 and rotates into the threaded hole 9, so that the fixation between the base table 4 and the implant 2 is achieved, then the dental crown 1 is inserted into the top of the base table 4 for fixing, the nano-hydroxyapatite coating 13 is released through the micropores 14 on the root of the implant 2, the protein for regulating and controlling bone repair is added, so that osseointegration can be better promoted, the TiN nano-coating has good antibacterial property, the generation of bacteria can be inhibited, and the proliferation and adhesion of gingival fibroblasts can be promoted.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A3D prints root bone implant with multistage structure, includes dental crown (1) and sets up implant (2) in dental crown (1) bottom, its characterized in that: the top of the implant (2) is provided with a fixing groove (3), the inside of the fixing groove (3) is movably connected with a base station (4), the top of the base station (4) sequentially penetrates through the fixing groove (3) and the dental crown (1) and extends to the inside of the dental crown (1), the surface of the base station (4) is fixedly connected with a biological silica gel sheet (5) positioned at the top of the implant (2), the bottom of the inner wall of the fixing groove (3) is fixedly connected with a cushion pad (6), the bottom of the inner wall of the base station (4) is in threaded connection with a fastening screw (7), the bottom of the fastening screw (7) sequentially penetrates through the cushion pad (6), the fixing groove (3) and the implant (2) and extends to the inside of the implant (2), the inside of the implant (2) and the bottom of the fixing groove (3) are provided with a threaded hole (9) matched with the fastening, the upper portion fixedly connected with first screw thread section (8) on implant (2) surface, the middle part fixedly connected with second screw thread section (10) on implant (2) surface, the bottom fixedly connected with third screw thread section (11) on implant (2) surface, activity groove (12) have been seted up to implant (2) inside bottom, and the inner wall of activity groove (12) has nanometer hydroxyapatite coating (13) through the adhesive bonding, micropore (14) have been seted up to implant (2) surface's bottom.
2. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the surfaces of the first thread section (8), the second thread section (10) and the third thread section (11) are coated with TiN nano coatings, and the thread pitch between every two adjacent thread gaps of the first thread section (8) is 0.7 mm.
3. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the thread pitch between two adjacent thread gaps of the second thread section (10) is 0.5mm, and the thread pitch between two adjacent thread gaps of the third thread section (11) is 0.3 mm.
4. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the dental crown is characterized in that a groove is formed in the dental crown (1), the top of the abutment (4) is embedded in the groove, and the top of the abutment (4) is in interference fit with the groove of the dental crown (1).
5. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the top of the buffer pad (6) is in contact with the bottom of the base platform (4).
6. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the depth of the micropores (14) is 400-600 microns, and the pore diameter of the micropores (14) is 30-50 microns.
7. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the micropores (14) are used for releasing the nano hydroxyapatite coating (13).
8. A 3D printed spinal implant having a multi-segmented structure according to claim 1, wherein: the buffer pad (6) is of a ring-shaped structure, and the buffer pad (6) is made of PEEK resin materials and used for avoiding direct collision between the base platform (4) and the implant (2).
9. A method of making a root bone implant according to any one of claims 1 to 8, wherein: the method specifically comprises the following steps:
s1, model design of the implant: obtaining a tooth model of a patient, drawing a corresponding dental crown (1) and an implant (2) by using three-dimensional design software, outputting a designed structural model into an STL data format, importing the STL data format into commercial preprocessing software, and setting the thickness of a slice layer to be 0.03-0.06 mm to form a slice file;
s2, importing the slice file obtained in step 1 into a laser 3D printer, and setting specific laser processing parameters: laser power: 280 KW-360 KW, scanning speed: 800-1250 mm/s, lap joint rate: 35% -60%, keeping the thickness of the powder layer consistent with that of the slice layer, and performing 3D printing to obtain the 3D printed rootbone implant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110189100.3A CN113069229A (en) | 2021-02-19 | 2021-02-19 | 3D prints root bone implant with multistage structure |
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| CN202110189100.3A CN113069229A (en) | 2021-02-19 | 2021-02-19 | 3D prints root bone implant with multistage structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117717427A (en) * | 2024-02-18 | 2024-03-19 | 首都医科大学宣武医院 | Oral implant system |
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2021
- 2021-02-19 CN CN202110189100.3A patent/CN113069229A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117717427A (en) * | 2024-02-18 | 2024-03-19 | 首都医科大学宣武医院 | Oral implant system |
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Address after: 714000 additive manufacturing Innovation Center Industrial Park, No. 70, Chaoyang Street, high tech Industrial Development Zone, Weinan City, Shaanxi Province Applicant after: Bolite (Weinan) additive manufacturing Co.,Ltd. Address before: No.4, chongye Road, high tech Industrial Development Zone, Weinan City, Shaanxi Province Applicant before: SHAANXI ADDITIVE MANUFACTURING RESEARCH INSTITUTE RESEARCH CO.,LTD. |
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Application publication date: 20210706 |